Fire-pot for cooking-stoves.



No. 792,678. PATENTED JUNE 20, 1905. C. M. STROUD & A. J. MURDOOK.

FIRE POT FOR COOKING ST-OVES.

APPLICATION FILED MAR. 7, 1904.

W W w w m w m UNITED STATES Patented June 20, 1905.

PATENT EEIcE.

OHARLES M. STROUD, OF HASTINGS, AND ALBERT J. MURDOOK, OF MINNEAPOLIS,MINNESOTA.

FIRE-POT FOR COOKlNG-STOVES.

SPECIFICATION forming part of Letters Patent No. 792,678, dated June 20,1905. Application filed March 7, 1904. Serial No- 196,838.

To all whont it may concern.-

Be it known that we, CHARLES M. STRoUD, reslding at Hastings, in thecounty of Dakota,

and ALBERT J. MURDOOK, residing at Minne-.

hereby declare the following to be a full, clear,-

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

Our invention has for its object to provide an improved fire-pot forcooking-stoves; and to this end it consists of the novel devices andcombinations of devices hereinafter described, and defined in theclaims.

From practical experience we have found that coal will burn moreeconomically and with less draft when confined in approximatelycylindrical fire-pot chambers. At the same time it is a well-known factthat wood cannot be burned to advantage in chambers of such form, but,on the contrary, must have elongated chambers in which to lie when thesame is to be burned in a fire-pot of the dimensions required inacooking stove or range. Our invention provides a convertible fire-potwhich is adapted to be quickly arranged either for the burning of coalor wood and which will meet all of the requirements above noted.

The improved convertible fire-pot in its preferred form is illustratedin the accompan ying drawings, wherein like characters indicate likeparts throughout the several views.

Figure 1 is a view principally in side elevation, but with some partsbroken away and with some parts sectioned, showing our improved fire-potapplied in working position to an ordinary cooking-stove. Fig. 2 is adetail in vertical section on the line 00 m of Fig. 1, some parts beingbroken away. Fig. 3 is an end elevation of the improved fire-pot removedfrom working position. Fig. 4: is a plan view of the said fire-pot, andFig. 5 is a transverse vertical section on the line {0 x of Fig. 4.

Of the parts of a stove or range the numeral 1 indicates the body, thenumeral 2 the fire-pot chamber, the numeral 3 the grate, and the numeral4: the front griddles, which parts may be of the ordinary or anysuitable construction.

The numeral 5 indicates the oblong integrally-formed body of thefire-pot, having preferably notches 6 at its lower extremity. In formthe chambers of the twin fire-pot are preferably tapered downward. Onits inner intermediate surface the shell which forms the body of thetwin fire-pot is formed with vertically-extended seats 7, in whichloosely fit the ends of a removable bridge or pot-dividing partition 8.In horizontal section this bridge or partition 8 is double concave, andwhen placed in working position it completes the formation of the twochambers of the firepot, the said chambers thus completed beingapproximately round in horizontal section and, as before stated,tapering down. The upper portion of the removable bridge or partition 8,however, lies materially below the upper extremities of the two fire-potchambers, so as to leave the upper portions of the said chambers incommunication at 9. The ends of the bridge or partition 8 taperdownward, so as to closely fit the seats 7 when dropped into its extremelowered position. This tapering engagement also makes the removal of thebridge or partition an easy matter.

This improved firepot may be applied within the combustion-chamber ofthe stove in a great many different ways; but preferably it is securedtherein by means of fire-clay, tightly packed around the same andagainst the walls of the firepot chamber of the stove, so as to cut offall draft through said chamber except through the chambers of saidfire-pot. This manner of applying the fire-pot has the advantage that noclose fits are required, since the intervening space between thefire-pot and the walls of the fire-pot chamber is all filled in withclay, and, furthermore, this method of application may be cheaply andquickly carried out.

When the bridge or partition 8 is placed in working position, twodistinct fire-pot chambers are afforded, and the fire in each may bevaried without varying the fire in the other,

and at the same time when a very heavy fire is desired and the two potsare completely filled with coal the two fires may run completelytogether by the burning coal contained within the space 9. However,unless a heavy draft is employed the coal in the space 9 will not beburned to any great extent, but will be held in reserve and will be feddown into the fire-pot chambers as the coal burns away. Hence fromseveral points of view the communicating space 9 between the twofire-pots is important.

If desired, hard coal can be burned in one chamber of the fire-pot andsoft coal in the other, or coal may be burned in one chamber and shortpieces or blocks of wood in the other. Again, fire may be maintainedonly in one chamber when a light fire is desired.

When the bridge or partition 8 is removed, the two fire-pots are, asalready stated, thrown into one, which is then perfectly adapted to theburning of wood. This convertible firepot therefore adapts the stove tobe used to burn wood in the summer-time and coal in the winter-time.

By actual experience we have found that by use of the fire-pot abovedescribed placed within the fire-pot chamber of a standard cooking-stoveas a substitute for the ordinary grates or rectangular fire-potsdesigned to burn coal a very much greater heat is obtainable with asmaller quantity of fuel and, furthermore, that the stove will burn wellunder less draft and that a great saving of fuel is effected. We havealso found that the fire will require less poking, will retain a firelonger when the stove is tightly closed, and will fire up more quicklywhen the draft is turned on. Since the fire is concentrated directly atpoints under the openings which are normally closed by thegriddles A, avery great heat is available at these openings for cooking purposes. Apot or other cooking utensil set into one of the griddle-holes will belocated directly over one of the fire-pot chambers, and hence will besubject to the most intense heat available.

From the foregoing description and statements made it will be understoodthat the device described is capable of modification within the scope ofour invention as herein set forth and claimed.

What we claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

1. A twin fire-pot having an integrallyformed body, and having aremovable bridge or partition fitting between the extremities thereof,the top of which bridge terminates materially below the top of saidbody, substantially as described.

2. A twin fire-pot comprising a body having approximatelysemicylindrical extremities, and having a centrally-located doubleconcave bridge or partition cooperating with the said body to form twofire-pot chambers that are approximately round in horizontal section,substantially as described.

3. A fire-pot body having removably seated, between its extremities, abridge or partition, the top of which terminates materially below thetop of said body, substantially as described.

4. A twin fire-pot comprising the integrallycast body 5, formed withinternal seats 7, said body tapering downward, and the detachable bridgeor partition 8 fitting said seats 7 at its ends, and terminating at itsupper edge below the top of the said body 5, and which bridge orpartition is concave on both sides, and cooperates with the end portionsof said body 5 to form two chambers that are approximately round inhorizontal section, substantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

CHARLES M. STROUD. ALBERT J. MURDOCK. Witnesses:

H. D. KILGORE, F. D. MERCHANT.

